Not to change the conversation but that's the same way you do it in PyMongo[1], I agree it looks bit un-pythonic. [1] http://api.mongodb.org/python/1.9%2B/exam

Not to change the conversation but that's the same way you do it in PyMongo[1], I agree it looks bit un-pythonic. [1] http://api.mongodb.org/python/1.9%2B/examples/map_reduce.html http://api.mongodb.org/python/1.9%2B/examples/map_reduce.htm...